Duplicating-machine.



H. C. GAMMBTER. DUPLIGATING MACHINE. APPLIGATION FILED MAY14,1908.

Patented Apr. 21, 1914 2 SHEETS-SHEET l.

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1,094,065, Patented Apr. 21, 19ML 2 SHBBTS-SHEBT 2.

/lfz'nesses Inrfenoz f By fum; (im

UNITED STATES PATENT OFFICE.

HARRY C. GAMMETER, OF BRATENAHL, OHIO, ASSIGNOR 'IO THE AMERICAN MULTIGRAPH COMPANY, OF CLEVELAND, OHIO, A CORPORATIONOF OHIO.

Specication of Letters Patent.

Patented A131. 21, 1914.

Application filed May 14, 1908. Serial No. 432,777.

To all whom it may concern:

Be it known that I, HARRY C. GAMMETER, a citizen of the United States residing at Bratenahl, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful' Improvement in Duplicating- Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

The object of this invention-is to provide a rotary printing press with a removable form holding individual type, thus enabling forms once composed to be left standing, one whole form being substituted for another when desired.`

The invention is Well adapted for embodiment inan office printing press of the type known as the Multigraph or the Gammeter printer wherein there is a rot-ary printing member adapt-ed to hold -parallel lines of individual type and a rotary coperating impression platen. In such machines the type may be inked either directly or by an inked ribbon, -which ribbon may be mounted on spools carried in a recess in the drum. Suitable means for feeding paper may be employed'cont-rolled by the rotation of the drum itself. The Gammeter printer and the Multigraph, as heretofore' made, have this construction. Their operation is effective, but if one form isto be replaced by another, itis necessary to disassemble the first form, removing it either a type vat a time or line by line; vand if the removed form is to be again used it is necessary to reassemble it. T his reassemblage, even when lines areremoved as a whole, takes considerable time. Moreover, the removed lines may become misplaced so .that 'when the form is renewed it may not be complete, or correct and may require additional assembling.

' To enable the form to be removed as a whole and set aside for subsequent replacement, I have devised the present machine, wherein the surface which carries t-he type is removable, being mounted on a skeleton drum which carries the ribbon spools and the paper controlling cam. By this means, whenever it is desired to discard a form temporarily, the type holding member is removed with the form as a whole and set aside for subsequent replacement and another form is immediately substituted. My type holding surface is simple and cheap in construction and is efficient in service, giving a very accurate present-ation of the type to the platen.

My invention consists of the means I employ to attain tl1e.above described result.

It consists alsolmore particularly of the embodiment herein shown and hereinafter described.

In the drawings FigureV 1 is a vertical section through a Multigraph or Gammeter printer having my invention. Fig. 2 is a front elevation of the same. Fig. 3 is an end view of a drum which when separated comprises the bodies for two of my type holding members. Fig. et is a longitudinal sect-ion through the skeleton drum withy my type holding member applied thereto.

As shown in the drawings, 10 represents the frame of the printing machine having a base and suitable end plates. In these end plates is journaled a shaft 11, on which are mounted spiders or rings 12 and 13. These rings, are braced by shouldered tie rods 18 which have nuts on their ends. The shaft, rings and tie rods constitute a skeleton drum. This drum is adapted to be rotated by a suitable crank 14 or in other suitable manner. Beneath the drum is a rotary impression platen 15 which has a gear 16 meshing with the gear 17 on the drum ring 13.

20 represents the body of my removable printing member which is shown as a semicylindrical piece of metal reinforced by the transverse webs 21, 22 and 23. Into the surface of this member are set longitudinal rails 24 providing between them under cut grooves adapted to be occupied by grooved' type. This type holding segment rests near its ends on the periphery of the ring 12 and a suitable arc shaped projection 19 on the ring 13. The stifi'ening webs rest at their edges substantially against thetie rods 18, the webs being grooved for that purpose. The segment is held on the. drum by a pair of dogs 80 which surround the shaft 11 and have turned over ends 31 extending through y is provided, while the simple loosening of the set screws 33 allows the shifting of the dogs to release the segment so that it may be entirely removed and another similar segment substituted for it. The segment is long enough arcually page form used.

The type on the segment may be inked by inking rollers, or otherwise, independent of the drum as desired. They may also be inked by a ribbon carried by the drum itself. For this purpose I provide suitable ribbon spools 40 mounted between the end members 12 and 13 of the skeleton drum. These spools engage at their ends with ratchets 41 by which they may be fed by suitable mechanism, carried by the end member 13. For .this purpose'I have shown a pawl 46 on a strap 45 which surrounds and is driven by a stationary eccentric 47. This pawl is double shouldered and adapted to engage either ratchet, and the gain made is held by suitable detents, not shown. This is substantially after the manner of the mechanism shown in my application No. 240,167. The spools are shown as held in place by a suitable spring 44 pressing them toward the ring 13. The spools and their holding and drivingmechanism are thus entirely independent of the type holding segment.

The paper may be fed to the printing couple by feed rollers and 51, the former of which is geared with the platen to be continually rotated, and the latter of which is carried by arms 52, one of these arms having a roller which coperates with thecam 53 on the ring 13, whereby as the drum is rotated the roller 51 is raised or lowered to control the paper feed. This paper feeding mechanism is substantially the same as that shown in my Patent N o. 846,992. It is to be here noticed that the paper feed and the cam which controls it are entirely independent of the type holding segment. a

From what has been described 'it will be understood that my type holdingsegment may be removed whenever desired without in any manner disturbing the rest of the printing drum. To change from one complete form to another therefore it is only necessary to take out one of the ribbon spools, uncovering the type, loosen the set screws 33, shift the dogs and remove the segment. The segment with its type may then be laid away until needed and another segment with its type may be as simply put in place. On the other hand the type form may be removed from the segment, a type at a time or a line at a time, withoutremoving the segment from the drum, the operation in this regard being the familiar one in the h'fultigraph, for example.

Any suitable form of type setting and distributing machine may be employed, either independently of the printing machine or to carry the longest Y skeleton drum,

'mg on said rings,

mounted along the left hand side of the printing mechanism shown in Fig. 2, and assembling or distributing typedirectly to or from the segment. as desired. I have shown in Fig. 2 a suitable channel 60, across the left hand frame member which is to be taken as illustrative of any means by which type may be guided to or from the segment when in place. If desired, the segment may be loaded with type by hand or mechanically in a machine entirely separate from the printer.

To construct my webbed segment economically and accurately, I first make a, casting of a complete drum as shown in Fig. 3, this drum having a cylindrical surface for receiving the rails and having properly formed ends and webs. After being cast the drum is put in a lathe or boring machine and the exterior surface, as well as the interior surface which is to rest on the end members of the drum, is turned olf perfectly. The surface is grooved longitudinally and the rails 24 secured therein. The cylinder is then split apart on its diametrical plane as indicated by the dotted lines 63 in Fig. 3. This provides two properly formed segments. 'Ihe recesses 32 for the dogs 30, as well as the recesses for receiving the tie rods, are made at the time of casting. After the complete drum is parted it only remains to put each segment into a standard or jig corresponding thereto, andgrind off the outer surface of the rails to give them a perfect presentation.

claim: 1. In a printing couple, the combination of a shaft, members rigidly mounted thereon, a removable segmental member formed to hold a plurality of lines'of type, and a hook for removably holding it in place on the members on the shaft, said hook engaging the shaft between said members.

2. The combination of a shaft, a pair of rings thereon, a type holding member seata pair of webs for said ype holding member, and a pair of dogs on e shaft engaging said webs.

3. T he combination, with a skeleton drum, comprising. a shaft, rings and tie rods connecting s aid rings, of a removable rigid type holdlng segment adapted to rest on the rlngs and having webs projecting t-ransversely toward the shaft and means for holding the segment in place.

4. The combination, with a shaft and members therein, of a removable rigid ty e holding segment adapted t rest on sald members, and having webs projecting transversely toward the shaft, dogs movably mounted on said shaft and operating to engage shoulders on the webs, and set screws for holding the dogs in place.

5. The combination, with a skeleton drum, comprising a shaft, rings and tie rods connoeaoee necting said rings, of a removable rigid type Y holding segment adapted to rest on the rings having webs projecting transversely toward the shaft, and dogs movably mounted on said shaft and having hooks adapted to occupy openings in said webs, and means for locking the dogs in place rthe combination, with a struct-ure adapted to turn on an anis and provided with a shaft and two separated projecting members forming seats for the segment, of a typeholding segment adapted to rest on such seats and formed with longitudinal .rails for carrying parallel lines of type in page form, and means engaging the shaft between such members for holding the segment on the structure.,

7. ln a machine of the character described, in combination, a shaft, a rotatable structure mounted thereon, a rigid removable type holding segment adapted to seat on such structure, and a suitable hook for connecting such segment with the shaft.

8, In a machine of the character described, the'combination of a rotatable shaft having a pair of members mounted thereon and rotating therewith, a' removable seg'- ment adapted to seat on said members and provided with parallel longitudinal overhanging rails, said segment being provided with a web on its inner side, whereby it is stiffened where it bridges the space between said members, and means for locking said segment to said shaft, y

9. The combination, with a shaft and a pair of members thereon, of a segmental typeholder bridging vthe distance between said members and having a stiftening web on its concave side, and a hook for locking the shaft and webB 10. The combination of a rotatable shaft, a pair of separated ring-like members rigidly mounted thereon and having seats for a segment, a removable segment having its concave side adjacent to the ends resting on said seats, fand means engaging the interior of the segment for holding it on said seats.

ll. 'ihe combination of a rotatable shaft, a pair of separated ring-like members rigidly mounted thereon and having seats for a segment, a removable segment having its concave side adjacent -to the ends rest-ing on said seats, shoulders for preventing the longitudinal shifting' of the segment, and means engaging the interiorof the segment for clamping it onto the seats.

12. The combination of a rotatable shaft, a pair of spaced rings -thereon having seats concentric of the shaft, a movable segment having an inner transverse web and having concave seats adjacent to its ends adapted to rest on the seats of the rings, vand means engaginop the segment and shaft between the rings for removably clamping the segment'to the shaft.

13. The combination of a rotatable shaft, a pair of spaced rings thereon having seats concentric of the shaft, a movable segment having an inner transverse web and having concave seats adjacent to its ends adapted to rest on the seats of the rings, and means acting on the interior of the segment for holding it on the seats and preventing radial movement of the segment. Y

14. The combination of a shaft, a pair of separated rings thereon, a pair of rods parallel with the shaft connecting the rings, a removable segment, the end portions of the segment o-n their concave faces resting on seats on the rings, internal transverse webs on the segment project-ing inwardly toward said rods, and'means for locking said segment in place.

In testimony whereof, l hereunto aiiix myv signature in the presence of two wit nesses. l

HARRY C GAMMETER.

Witnesses:

ALBERT H. BATES, A. J. HUnsoN.

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